package com.sky.controller.user;

import com.sky.constant.StatusConstant;
import com.sky.entity.Dish;
import com.sky.result.Result;
import com.sky.service.DishService;
import com.sky.vo.DishVO;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;

@RestController("userDishController")
@RequestMapping("/user/dish")
@Slf4j
@Api(tags = "C端-菜品浏览接口")
public class DishController {
    @Autowired
    private DishService dishService;

    @Autowired
    private RedisTemplate redisTemplate;
    /**
     * 根据分类id查询菜品
     *
     * @param categoryId
     * @return
     */
    @GetMapping("/list")
    @ApiOperation("根据分类id查询菜品")
    public Result<List<DishVO>> list(Long categoryId) {
        // 1. 查询的时候从redis里面查询缓存数据
        List<DishVO> list1 = (List<DishVO>) redisTemplate.opsForValue().get("dish_"+categoryId);

        // 2. 如果没有的话就去查询数据库
        if(list1 != null){
            // 如果有的话就返回数据
            log.info("redis中有缓存");
            return Result.success(list1);
        }

        Dish dish = new Dish();
        dish.setCategoryId(categoryId);
        dish.setStatus(StatusConstant.ENABLE);//查询起售中的菜品
        list1 = dishService.listWithFlavor(dish);
        // 3.如果从数据库查询出来数据，先把数据保存到redis中
        redisTemplate.opsForValue().set("dish_"+categoryId,list1);
        log.info("redis中没有缓存，先把数据缓存下来");
        return Result.success(list1);
    }

}
